TWC offers free preview of Tennis Channel

The city’s dominant cable and Internet provider says the two-week preview will include more than 70 hours of live coverage of the final Grand Slam tournament of the year.

The catch: The preview only is available to Time Warner’s digital customers. That means folks with basic cable will have to watch US Open highlights on SportsCenter unless they have a digital converter box, Time Warner says.

For those who subscribe to a TWC digital cable package, you can find the Tennis Channel on digital channel 263.